Results 31 to 40 of about 120,968 (283)

Slow light with flat or offset band edges in multi-mode fiber with two gratings

open access: yes, 2007
We consider mode coupling in multimode optical fibers using either two Bragg gratings or a Bragg grating and a long-period grating. We show that the magnitude of the band edge curvature can be controlled leading to a flat, quartic band-edge or to two ...
de Sterke, C. Martijn   +3 more
core   +1 more source

Cure monitoring of a UV cured epoxy resin using a long period grating Mach- Zehnder interferometer [PDF]

open access: yes, 2007
A cascaded long period grating Mach-Zehnder interferometer is used to monitor the change in refractive index of a UV cured epoxy resin over a cure cycle.
Buggy, Stephen J.   +3 more
core   +1 more source

Properties of length-apodized phase-shifted lpgs operating at the phase matching turning point

open access: yes, 2012
The characteristics of length-apodized phase-shifted fiber optic long period gratings with full and partial nanostructured coatings have been explored theoretically and experimentally.
James, Stephen W.   +2 more
core   +1 more source

A simple method for fabricating phase-shifted fibre Bragg gratings with flexible choice of centre wavelength [PDF]

open access: yes, 2009
A simple technique for fabricating phase-shifted fibre Bragg gratings (PSFBGs) without the use of a phase-shifted phase mask is presented. Two, 3-mm long, standard fibre Bragg gratings (FBGs) were inscribed sequentially in singlemode fibre at the same
Chehura, Edmon   +2 more
core   +1 more source

Long Period Bragg Grating in Coaxial Transmission Lines

open access: yesJournal of Microwaves, Optoelectronics and Electromagnetic Applications
This work shows the utilization of a coaxial cable for the fabrication of a long period Bragg grating. The grating is fabricated removing the dielectric in short pieces of the cable so that the discontinuities account for the variation in the medium ...
Sergio Luiz Stevan Jr   +4 more
doaj   +1 more source

Fabrication of rGO-GO Long Period Fiber Grating Using Laser Reduction Method

open access: yesIEEE Photonics Journal, 2017
A laser-reduction technique is investigated to fabricate a novel long period fiber grating (LPFG), whose period is a section of graphene oxide (GO) and reduced graphene oxide (rGO) films on a side polished fiber.
Liheng Chen   +9 more
doaj   +1 more source

Optical fibre long period grating spectral actuators utilizing ferrofluids as outclading overlayers [PDF]

open access: yesJournal of the European Optical Society-Rapid Publications, 2011
Results are presented on the spectral tuning of optical fibre long period gratings utilizing water and oil based ferrofluids as outclading overlayers, under static magnetic field stimulus.
Konstantaki Maria   +2 more
doaj   +1 more source

Optical Response of Grating-Coupler-Induced Intersubband Resonances: The Role of Wood's Anomalies

open access: yes, 1997
Grating-coupler-induced collective intersubband transitions in a quasi-two-dimensional electron system are investigated both experimentally and theoretically.
Berger, A.   +7 more
core   +1 more source

Sensitive protein detection using an optical fibre long period grating sensor anchored with silica core gold shell nanoparticles [PDF]

open access: yes, 2014
Copyright ©2014 Society of Photo-Optical Instrumentation Engineers. This paper was published in the Proceedings of SPIE and is made available with permission of SPIE. One print or electronic copy may be made for personal use only.
Clark, M.   +6 more
core   +1 more source

Long Period Gratings Formed in Depressed Cladding Fibres [PDF]

open access: yesBragg Gratings, Photosensitivity, and Poling in Glass Fibers and Waveguides: Applications and Fundamentals, 1997
There has been a significant interest in long period gratings, primarily due to their applications in gain-flattened erbium doped fibre amplifiers [1]. Up till now, cladding modes supported by the glass-air interface of an optical fibre have been used in a forward mode coupling scheme involving also the guided fundamental mode of the optical fibre ...
Dong, L., Reekie, L., Cruz, J.L.
openaire   +4 more sources

Home - About - Disclaimer - Privacy